Mathematics

Grade9

Easy

Question

The measure of the angle $straight m angle A$ is ___________. Remember $angle straight A plus angle straight B plus angle straight C space equals space 180 to the power of ring operator$

180°
70°
54°
56°

hint Hint:

Using sum of angles in a triangle is 180° .solve the equation to find the value of x.
Find the measure of angle A by Substituting the value of x in 8x°

The correct answer is: 54°

From the above triangle (7x+5) ° , 8x° and (10x)° are the angles.
(7x+5) ° + 8x° + (10x)°= 180° (sum of angles in a triangle)
25x° + 5° = 180°
25x° = 175°
x° = 7°
Finding the measure of angle A by Substituting the value of x in 8x°
8x° = 8 x 7° = 56°
Therefore, the measure of angle A is 56°.

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The measure of the angle is ___________. Remember

180° 70°54°56°

Using sum of angles in a triangle is 180° .solve the equation to find the value of x.Find the measure of angle A by Substituting the value of x in 8x°

The correct answer is: 54°

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The measure of the angle $straight m angle A$ is ___________. Remember $angle straight A plus angle straight B plus angle straight C space equals space 180 to the power of ring operator$

180°
70°
54°
56°

Using sum of angles in a triangle is 180° .solve the equation to find the value of x.
Find the measure of angle A by Substituting the value of x in 8x°

Classify the triangle whose angle measures are 40 $°$ °, 60 $°$ , and 80 $°$ °.

Classify the triangle whose angle measures are 40 $°$ °, 60 $°$ , and 80 $°$ °.

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The measure of the angle x $i s______.$